Pennyweight Converter
Enter a weight in pennyweights, grams, troy ounces, or grains and get instant conversions across all units.
Enter a Weight
Type in any field — all others update instantly.
Conversion Reference
| Unit | dwt | grams | grains |
|---|---|---|---|
| 1 pennyweight | 1 | 1.55517 | 24 |
| 1 troy ounce | 20 | 31.10348 | 480 |
| 1 gram | 0.64301 | 1 | 15.43236 |
| 1 grain | 0.04167 | 0.06480 | 1 |
Key relationships
- 1 troy oz = 20 dwt = 480 gr = 31.10348 g
- 1 dwt = 24 grains = 1.55517 g
- 1 dwt = 1/20 troy ounce
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Summary
Enter a weight in pennyweights, grams, troy ounces, or grains and get instant conversions across all units.
How it works
- Type a value into any unit field — pennyweights, grams, troy ounces, or grains.
- All other fields update instantly with the converted amounts.
- Click "Copy" next to any result to copy that value to the clipboard.
- Click "Reset" to clear all fields and start over.
- Use the reference table at the bottom to see common conversion factors.
Use cases
- Price gold jewelry by the pennyweight when quoting or appraising pieces.
- Convert a dwt weight to grams for international invoices.
- Verify grain weights on gold coin or bullion specifications.
- Cross-check pennyweight vs. troy ounce when comparing scrap gold buyers.
- Calculate the weight of a gold chain in pennyweights from a gram scale reading.
- Confirm precious metal weights when reconciling purchase orders.
Frequently Asked Questions
Last updated: 2026-06-19 ·
Reviewed by Nham Vu